diff --git a/public/auth/login.php b/public/auth/login.php
index a30ca70..0b02893 100644
--- a/public/auth/login.php
+++ b/public/auth/login.php
@@ -3,7 +3,6 @@ namespace Misuzu;
 
 use Misuzu\AuthToken;
 use Misuzu\Config\CfgType;
-use Misuzu\Net\IPAddress;
 use Misuzu\Users\User;
 use Misuzu\Users\UserNotFoundException;
 use Misuzu\Users\UserAuthSession;
diff --git a/public/auth/twofactor.php b/public/auth/twofactor.php
index af31b16..cee8a1e 100644
--- a/public/auth/twofactor.php
+++ b/public/auth/twofactor.php
@@ -1,7 +1,6 @@
 <?php
 namespace Misuzu;
 
-use Misuzu\Net\IPAddress;
 use Misuzu\Users\User;
 use Misuzu\Users\UserLoginAttempt;
 use Misuzu\Users\UserSession;
@@ -18,7 +17,6 @@ if(UserSession::hasCurrent()) {
 
 $twofactor = !empty($_POST['twofactor']) && is_array($_POST['twofactor']) ? $_POST['twofactor'] : [];
 $notices = [];
-$ipAddress = IPAddress::remote();
 $remainingAttempts = UserLoginAttempt::remaining();
 
 try {
diff --git a/public/manage/users/warnings.php b/public/manage/users/warnings.php
index 818f992..215ccbf 100644
--- a/public/manage/users/warnings.php
+++ b/public/manage/users/warnings.php
@@ -2,7 +2,6 @@
 namespace Misuzu;
 
 use InvalidArgumentException;
-use Misuzu\Net\IPAddress;
 use Misuzu\Users\User;
 use Misuzu\Users\UserNotFoundException;
 use Misuzu\Users\UserWarning;
diff --git a/src/Net/IPAddress.php b/src/Net/IPAddress.php
index 62d00f1..d4bfa60 100644
--- a/src/Net/IPAddress.php
+++ b/src/Net/IPAddress.php
@@ -1,24 +1,10 @@
 <?php
 namespace Misuzu\Net;
 
-use Exception;
-use InvalidArgumentException;
 use GeoIp2\Exception\AddressNotFoundException;
 
 final class IPAddress {
-    public const VERSION_UNKNOWN = 0;
-    public const VERSION_4 = 4;
-    public const VERSION_6 = 6;
-
-    private const SIZES = [
-        self::VERSION_4 => 4,
-        self::VERSION_6 => 16,
-    ];
-
-    public const DEFAULT_V4 = '127.1';
-    public const DEFAULT_V6 = '::1';
-
-    public static function remote(string $fallback = self::DEFAULT_V6): string {
+    public static function remote(string $fallback = '::1'): string {
         return $_SERVER['REMOTE_ADDR'] ?? $fallback;
     }
 
@@ -32,81 +18,4 @@ final class IPAddress {
             return $fallback;
         }
     }
-
-    public static function rawWidth(int $version): int {
-        return isset(self::SIZES[$version]) ? self::SIZES[$version] : 0;
-    }
-
-    public static function detectStringVersion(string $address): int {
-        if(filter_var($address, FILTER_VALIDATE_IP) !== false) {
-            if(filter_var($address, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) !== false)
-                return self::VERSION_6;
-
-            if(filter_var($address, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false)
-                return self::VERSION_4;
-        }
-
-        return self::VERSION_UNKNOWN;
-    }
-
-    public static function detectRawVersion(string $address): int {
-        $addressLength = strlen($address);
-
-        foreach(self::SIZES as $version => $length) {
-            if($length === $addressLength)
-                return $version;
-        }
-
-        return self::VERSION_UNKNOWN;
-    }
-
-    public static function cidrToRaw(string $cidr): ?array {
-        if(strpos($cidr, '/') !== false) {
-            [$subnet, $mask] = explode('/', $cidr, 2);
-        } else {
-            $subnet = $cidr;
-        }
-
-        try {
-            $subnet = inet_pton($subnet);
-        } catch(Exception $ex) {
-            return null;
-        }
-
-        $mask = empty($mask) ? null : (int)$mask;
-
-        return compact('subnet', 'mask');
-    }
-
-    public static function matchCidr(string $address, string $cidr): bool {
-        $address = inet_pton($address);
-        $cidr = self::cidrToRaw($cidr);
-        return self::matchCidrRaw($address, $cidr['subnet'], $cidr['mask']);
-    }
-
-    public static function matchCidrRaw(string $address, string $subnet, ?int $mask = null): bool {
-        $version = self::detectRawVersion($subnet);
-
-        if($version === self::VERSION_UNKNOWN)
-            return false;
-
-        $bits = self::SIZES[$version] * 8;
-
-        if(empty($mask))
-            $mask = $bits;
-
-        if($mask < 1 || $mask > $bits || $version !== self::detectRawVersion($subnet))
-            return false;
-
-        for($i = 0; $i < ceil($mask / 8); $i++) {
-            $byteMask = (0xFF00 >> max(0, min(8, $mask - ($i * 8)))) & 0xFF;
-            $addressByte = ord($address[$i]) & $byteMask;
-            $subnetByte = ord($subnet[$i]) & $byteMask;
-
-            if($addressByte !== $subnetByte)
-                return false;
-        }
-
-        return true;
-    }
 }
diff --git a/src/Net/socket.php b/src/Net/socket.php
deleted file mode 100644
index ac4a467..0000000
--- a/src/Net/socket.php
+++ /dev/null
@@ -1,2 +0,0 @@
-<?php
-echo "bruno";